80 lines
2.4 KiB
JavaScript
80 lines
2.4 KiB
JavaScript
const esbuild = require('esbuild');
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const http = require('http');
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const { iifeBuild, esmBuild } = require('./util.cjs');
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const express = require('express');
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// Start 2 esbuild servers. One for IIFE and one for ESM
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// Serve 2 static directories: demo & cypress/platform
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// Have 3 entry points:
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// mermaid: './src/mermaid',
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// e2e: './cypress/platform/viewer.js',
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// 'bundle-test': './cypress/platform/bundle-test.js',
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const getEntryPointsAndExtensions = (format) => {
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return {
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entryPoints: {
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mermaid: './src/mermaid',
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e2e: 'cypress/platform/viewer.js',
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'bundle-test': 'cypress/platform/bundle-test.js',
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},
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outExtension: { '.js': format === 'iife' ? '.js' : '.esm.mjs' },
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};
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};
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const generateHandler = (server) => {
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return (req, res) => {
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const options = {
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hostname: server.host,
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port: server.port,
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path: req.url,
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method: req.method,
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headers: req.headers,
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};
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// Forward each incoming request to esbuild
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const proxyReq = http.request(options, (proxyRes) => {
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// If esbuild returns "not found", send a custom 404 page
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if (proxyRes.statusCode === 404) {
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if (!req.url.endsWith('.html')) {
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res.writeHead(404, { 'Content-Type': 'text/html' });
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res.end('<h1>A custom 404 page</h1>');
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return;
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}
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}
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// Otherwise, forward the response from esbuild to the client
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res.writeHead(proxyRes.statusCode, proxyRes.headers);
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proxyRes.pipe(res, { end: true });
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});
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// Forward the body of the request to esbuild
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req.pipe(proxyReq, { end: true });
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};
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};
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(async () => {
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const iifeServer = await esbuild.serve(
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{},
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{
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...iifeBuild({ minify: false, outfile: undefined, outdir: 'dist' }),
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...getEntryPointsAndExtensions('iife'),
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}
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);
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const esmServer = await esbuild.serve(
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{},
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{
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...esmBuild({ minify: false, outfile: undefined, outdir: 'dist' }),
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...getEntryPointsAndExtensions('esm'),
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}
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);
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const app = express();
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app.use(express.static('demos'));
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app.use(express.static('cypress/platform'));
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app.all('/mermaid.js', generateHandler(iifeServer));
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app.all('/mermaid.esm.mjs', generateHandler(esmServer));
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app.all('/e2e.esm.mjs', generateHandler(esmServer));
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app.all('/bundle-test.esm.mjs', generateHandler(esmServer));
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app.listen(9000, () => {
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console.log(`Listening on http://localhost:9000`);
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});
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})();
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